The number of green and blue stickers are equal.
If Adam gives away 80 green stickers and 20 blue stickers,
the ratio of green stickers to blue stickers becomes 3 : 8.
How many stickers are there at first?
|
Green |
Blue |
Before |
3 u + 80 |
8 u + 20 |
Change |
- 80 |
- 20 |
After |
3 u |
8 u |
The number of green and blue stickers is the same at first.
3 u + 80 = 8 u + 20
8 u - 3 u = 80 - 20
5 u = 60
1 u = 60 ÷ 5 = 12
Number of stickers that Adam has at first
= 3 u + 80 + 8 u + 20
= 3 u + 8 u + 80 + 20
= 11 u + 100
= 11 x 12 + 100
= 132 + 100
= 232
Answer(s): 232